/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file gpio.c * @brief This file provides code for the configuration * of all used GPIO pins. ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "gpio.h" /* USER CODE BEGIN 0 */ #include "usart.h" /* USER CODE END 0 */ /*----------------------------------------------------------------------------*/ /* Configure GPIO */ /*----------------------------------------------------------------------------*/ /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /** Configure pins PC15-OSC32_OUT ------> RCC_OSC32_OUT PC14-OSC32_IN ------> RCC_OSC32_IN PA14 (JTCK/SWCLK) ------> DEBUG_JTCK-SWCLK PA13 (JTMS/SWDIO) ------> DEBUG_JTMS-SWDIO OSC_OUT ------> RCC_OSC_OUT OSC_IN ------> RCC_OSC_IN */ void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); /*Configure GPIO pin Output Level */ HAL_GPIO_WritePin(GPIOB, STATUS_LED_Pin|LTE_EN_Pin|LTE_RST_Pin|LTE_PWRKEY_Pin, GPIO_PIN_RESET); /*Configure GPIO pins : STATUS_LED_Pin LTE_EN_Pin LTE_RST_Pin LTE_PWRKEY_Pin */ GPIO_InitStruct.Pin = STATUS_LED_Pin|LTE_EN_Pin|LTE_RST_Pin|LTE_PWRKEY_Pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); } /* USER CODE BEGIN 2 */ void LEDStatus_Active(void) { HAL_GPIO_WritePin(STATUS_LED_GPIO_Port, STATUS_LED_Pin, GPIO_PIN_SET); } void LEDStatus_Inactive(void) { HAL_GPIO_WritePin(STATUS_LED_GPIO_Port, STATUS_LED_Pin, GPIO_PIN_RESET); } /** * @brief Powers up the LTE module (Quectel EG91) using GPIO toggling. * * This function simulates pressing the PWRKEY and enables the level translator. * A wait period is included to allow UART stabilization. */ void LTE_HardwarePowerUp(void) { HAL_GPIO_WritePin(LTE_EN_GPIO_Port, LTE_EN_Pin, GPIO_PIN_SET); APP_LOG_MSG(" --- QUECTEL EG91 Power Up ---\r\n"); /* Power up the LTE Module Using Power Key */ HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_RESET); HAL_GPIO_WritePin(LTE_RST_GPIO_Port, LTE_RST_Pin, GPIO_PIN_RESET); HAL_Delay(100); HAL_GPIO_WritePin(LTE_RST_GPIO_Port, LTE_RST_Pin, GPIO_PIN_SET); HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_SET); HAL_Delay(200); HAL_GPIO_WritePin(LTE_RST_GPIO_Port, LTE_RST_Pin, GPIO_PIN_RESET); HAL_Delay(350); HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_RESET); HAL_Delay(100); for (uint8_t wait = 0; wait < 12; wait++) { LEDStatus_Active(); HAL_Delay(500); LEDStatus_Inactive(); HAL_Delay(500); // APP_LOG_MSG("."); } // APP_LOG_MSG(" Done\r\n"); } /** * @brief Powers down the LTE module (Quectel EG91) via GPIO toggling. * * This simulates a long-press of the PWRKEY, then waits 30 seconds to allow the module to shut down safely. */ void LTE_HardwarePowerDown(void) { APP_LOG_MSG(" --- QUECTEL EG91 Shut Down --- \r\n"); HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_RESET); HAL_Delay(100); HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_SET); HAL_Delay(700); HAL_GPIO_WritePin(LTE_PWRKEY_GPIO_Port, LTE_PWRKEY_Pin, GPIO_PIN_RESET); LEDStatus_Active(); // APP_LOG_MSG("Shutting off "); for (uint8_t wait = 0; wait < 30; wait++) { // APP_LOG_MSG("."); HAL_Delay(1000); } // APP_LOG_MSG(" Done\r\n"); LEDStatus_Inactive(); } /* USER CODE END 2 */